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扩展App Inventor：具有多点触控和手势检测功能 · App Inventor 2 中文网
... 顶部 var qrcode = new QRCode("qrcode", { text: window.location.href + "?f=share", //URL地址 width: 150, height: 150, colorDark: '#000000', //二维码颜色 colorLight: "#ffffff" //背景颜色}); App Inventor 2 中文网 © 2023 - docume...
SQL query return data from multiple tables
...ftware but obviously the DateReleased are incorrect. MySQL doesn't support Window Functions and Common Table Expression yet as some RDBMS do already. The workaround on this problem is to create a subquery which gets the individual maximum versionNo on each software and later on be joined on the othe...
AI2 Keep Awake
...eated with this extension. EnableShowOnLockScreen () Ensures that the window is displayed on the lock screen without entering the PIN. Should be called in the Screen.Initialize event. OpenBatteryOptimizationSettings () Opens a dialog that can be used to manually maintain the whitelist....
How to replace a hash key with another key
...ctually are.
– Dsel
Aug 21 '15 at 6:11
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Most efficient way to store thousand telephone numbers
...etera, up to the count of phone numbers for which the first m bits are 1...11 - this last count is 1000(decimal). There are 2^m such counts and each count is at most 1000. If we omit the last one (because we know it is 1000 anyway), we can store all of these numbers in a contiguous block of (2^m - 1...
Is calculating an MD5 hash less CPU intensive than SHA family functions?
...ad Q6600, 2.4 GHz, using one core), I get this in 32-bit mode:
MD5 411
SHA-1 218
SHA-256 118
SHA-512 46
and this in 64-bit mode:
MD5 407
SHA-1 312
SHA-256 148
SHA-512 189
Figures are in megabytes per second, for a "long" message (this is what you get for messages l...
filter items in a python dictionary where keys contain a specific string
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Jonathon ReinhartJonathon Reinhart
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How to delete items from a dictionary while iterating over it?
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answered Mar 21 '11 at 23:47
BlairBlair
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How to swap keys and values in a hash
... in your hash.
– Tilo
Apr 14 '15 at 11:19
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Best way to merge two maps and sum the values of same key?
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edited Apr 11 '14 at 2:39
Erik Kaplun
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